What is the process that results in the formation of an ion

Explain what happens at the saturation point when adding salt to water at room temperature.

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.

Which description best characterization the motion of particles in a solid